Refrigerator isolation board and processing technology thereof

Abstract

The invention relates to the technical field of refrigerator isolation boards, in particular to a refrigerator isolation board and a processing technology thereof. The processing technology comprisessteps as follows: 40%-55% by mass of polystyrene resin, 10%-20% by mass of organic silicon resin, 5%-15% by mass of a modified crosslinking agent, 5%-12% by mass of a foaming agent, 3%-8% by mass of alubricating agent, 8%-16% by mass of a coupling agent and 15%-30% by mass of a filling agent are added to a hot mixing machine and stirred at 130-140 DEG C for 1.5-2 h, and expanded polystyrene particles are prepared; extrusion of the expanded polystyrene particles: the expanded polystyrene particles obtained in S1 are conveyed to a conical twin-screw extruder for extrusion, screw rotating speedis controlled at 35-45 r / min, processing temperature is 150-170 DEG C, and the expanded polystyrene particles are extruded. The refrigerator isolation board and the processing technology thereof havebeneficial effects that the refrigerator isolation board has excellent heat stability and electrical insulating property and good waterproof and salt-spray proof properties, toughness of polystyrene boards can be strengthened, weather fastness is good, toughness and construction conditions are good, and the processing technology is simple and easy to operate and suitable for industrial production.

Description

technical field [0001] The invention relates to the technical field of refrigerator isolation boards, in particular to a refrigerator isolation board and a processing technology thereof. Background technique [0002] The refrigerator separator is a polymer synthesized by free radical addition polymerization of styrene monomer. It is a thermoplastic resin. Ordinary polystyrene resin is an amorphous polymer, and the side group of the polystyrene macromolecular chain is benzene. The random arrangement of rings and side groups determines the physical and chemical properties of polystyrene. Polystyrene has excellent performance, low price, low overall density, non-toxicity, heat insulation and shock absorption. [0003] Chinese Patent No. CN109624183A provides a method for preparing and molding refrigerator partitions with good thermal insulation effect, which can effectively avoid the loss of cold air, save electric energy, simple preparation process and easy operation, and can ...

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Problems solved by technology

[0005] The object of the present invention is to provide a refrigerator insulation board and its processing technology to solve the problem that the prepared refrigerator insulation board proposed in the above background technology has a high overall density, poor weather resistance, poor toughness of the refrigerator insulation board, and is prone to stress brittleness. Cracks, unable to meet the needs of daily life, not conducive to extensive promotion and popularization

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